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Summary
| Description |
English: Photo of the magnetic field of two bar magnets with like poles close together. The magnetic field was made visible by a layer of iron filings on a piece of paper laid on top of the magnets. The iron filings are shaped like long thin needles, and orient themselves parallel to the magnetic field lines at each point. From a 1916 physics text. Alterations to image: Changed bluish background to white by adjusting brightness, converted to greyscale, cropped out caption, converted to 16 greyscale PNG. |
| Date | |
| Source | Downloaded August 25, 2008 from Alexander Wilmer Duff, et. al. (1916) A Textbook of Physics, P. Blakiston's Son & Co., Philadelphia, USA, p.313, fig.234c on Google Books |
| Author | Alexander Wilmer Duff |
| Permission (Reusing this file) |
Public domain in the USA - published in the USA prior to 1923 |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:12, 26 August 2008 | | 706 × 451 (129 KB) | Chetvorno | {{Information |Description={{en|1=Photo of the magnetic field of two bar magnets with like poles close together, with the magnetic field made visible in a layer of iron filings on a piece of paper on top of the magnets}} |Source=Downloaded August 25, 2008 |
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